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Online R camera and lens compendium
The following www site features online reviews of Leica reflex cameras and lenses by Douglas Herr
Although it says "reviews", a lot of the site is still under construction, so all you get are quickie captions under photos. Still, if you are wondering what a particular R camera body or lens looks like, then this is a good place to start.
A similar kind of thing can be found on the Japanese "R Leica Fan Club" site at:
A note about possible broken links
This FAQ has over 900 external links. Over time it is inevitable some of them will break. If you are bothered by this, see this detailed topic elsewhere in the FAQ.